Home / 21,069.28-29,082.96-13,997.60

Finding the Fourth Proportional to 21,069.28, 29,082.96 and 13,997.60

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Solution

The fourth proportional to 21,069.28, 29,082.96 and 13,997.60 is: 19,321.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.28 : 29,082.96 = 13,997.60 : x
  2. Step 2: Convert to fraction form
    21,069.28/29,082.96 = 13,997.60/x
  3. Step 3: Cross multiply
    21,069.28x = 29,082.96 × 13,997.60
  4. Step 4: Simplify right side
    21,069.28x = 407,091,640.90
  5. Step 5: Solve for x
    x = 407,091,640.90/21,069.28
  6. Step 6: Final answer
    x = 19,321.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.